PGI is an acronym for Positive Girl Interaction. The higher the amount of PGI a guy has, the happier and more hopeful he becomes.

Maximizing your PGI is the ultimate goal for a guy when he is out on the town. Ones Positive Girl Interaction can be increased by talking to girls, dancing with girls, or taking a girl to poundtown, etc...
"My PGI skyrocketed once I got a hank senior from Julie last night"
by Lafferty Daniel April 18, 2010
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